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A8511 Datasheet (PDF) - Allegro MicroSystems

A8511 Datasheet PDF - Allegro MicroSystems
Part # A8511
Download  A8511 Download

File Size   579.98 Kbytes
Page   24 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description 2 MHz, 4 Channel150 mA WLED/RGB Driver

A8511 Datasheet (PDF)

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A8511 Datasheet PDF - Allegro MicroSystems

Part # A8511
Download  A8511 Click to download

File Size   579.98 Kbytes
Page   24 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description 2 MHz, 4 Channel150 mA WLED/RGB Driver

A8511 Datasheet (HTML) - Allegro MicroSystems

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A8511 Product details

Description
The A8511 is a multioutput WLED/RGB driver for backlighting medium-size displays. It is a fully integrated high-brightness (HB) LED driver solution that does not require external power devices to complete the backlighting design criteria. The A8511 integrates FETs for a boost converter as well as four 150 mA current sinks, offering a complete integrated solution at HB LED current levels. LED channels can be tied together for up to 600 mA sink capability. It can work from a single power supply of 6.8 to 21 V and withstand up to 40 V. The boost converter is a constant frequency, current-mode converter.

Features and Benefits
▪ Four LED sinks rated for 150 mA each (600 mA total)
▪ Boost converter with integrated 40 V DMOS switch and OVP–load-dump protection
▪ 600 kHz to 2.2 MHz switching frequency—ability to operate above the AM band
▪ Internal bias supply for single-supply operation (VIN= 6.8 to 21 V)
▪ 3.5 μA shutdown current—limits battery drain
▪ Active current sharing between LED strings for 0.8% current matching and 0.7% accuracy
▪ PWM dimming with LED PWM duty cycle control
▪ 4000:1 dimming range
▪ Extensive fault mode protection schemes:
   ▫ Shorted LED protection against misconnected loads—with true output disconnect
   ▫ Open LED disconnect protects against LED failures
   ▫ External thermistor sensing to limit LED temperature
   ▫ Output overvoltage protection (OVP): 19.5 V default can be adjusted as high as 38 V
   ▫ Open Schottky and open OVP resistor protection against external component failure
   ▫ Input under- and overvoltage protection (UVLO and OVLO) against VIN variation
   ▫ Boost current limit, output short circuit limit, overtemperature protection (OTP), and soft start

Applications include:
▪ GPS navigation systems
▪ Automotive infotainment
▪ Back-up camera displays
▪ Cluster backlighting
▪ Portable DVD players
▪ Industrial LCD displays




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About Allegro MicroSystems


Allegro MicroSystems is a semiconductor company that designs, manufactures, and markets high-performance power and sensing solutions. The company was founded in 1990 and is headquartered in Manchester, New Hampshire, USA.

Allegro MicroSystems' product portfolio includes Hall-effect sensors, power ICs, motor drivers, and magnetic digital position sensors. These products are used in a wide range of applications, including automotive, industrial, and consumer electronics.

Allegro MicroSystems is known for its expertise in magnetic sensing technology, which is used in many of its products. The company's products are designed to meet the highest standards of performance and reliability, and are manufactured using the latest technology and materials. Allegro MicroSystems also offers custom design and engineering services to meet the specific needs of its customers.

Allegro MicroSystems has a global presence, with sales offices and representatives located around the world. The company is dedicated to delivering innovative and reliable power and sensing solutions that meet the evolving needs of the electronics industry. In 2021, Allegro MicroSystems went public through an initial public offering (IPO) on the NASDAQ stock exchange.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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